Grader.



No. 890,728. PATENTED JUNE l6, 1908.

H. TOMPKINS. Dawn. 0. P. PATTERSON, ADMINISTRATOR.

GRADBR.

APPLICATION FILED NOV. 22, 1907.

J Y 3 /J 44 o w I Snveutcz I m (7 I: IITIRS zv., WASHINGTON. I c.

UNITED STATES PATENT OFFICE.

HAVILAND TOMPKINS, OF FAIRFIELD, ILLINOIS; O. P. PATTERSON ADMINISTRATOR OF SAID TOMPKINS, DECEASED.

GRADER.

Specification of Letters Patent.

Application filed November 22, 1907.

Patented June 16, 1908.

Serial No. 403,359.

To all whom it may concern:

Be it known that I, HAVILAND, TOMPKINS, a citizen of the United States, residing at Fairfield, in the county of Wayne and State of Illinois, have invented certain new and useful Improvements in Graders, of which the following is a specification.

This invention is a grader or scraper particularly useful for making, grading or repairing roads, and has for its object to pro vide an improved device, one feature of which is that its draft angle may be varied, and another feature is that its depth of cut may be varied, or the scraping boards can .be lifted entirely above the surface of the ground. In connection with the scraping board a roller is provided, by which the depth of cut is adjusted, and on which the device may be trans orted when not in use.

The invention is i lustrated in the accom panying drawings, in which Figure 1 is a front perspective view ofthe device. Fig. 2 is a side perspective view thereof.

Referring specifically to the drawings, 6 and 7 indicate front and rear boards or drag beams which stand at an inclination edgewise with respect to the ground, and which have cut plates or shoes 8 at their lower front edges. These boards are connected together, and spaced apart, by means of a series of bolts 9 which are provided with nuts 10, and beveled washers 11 to accommodate the angular position of the boards. These boards are arranged one in front of the other and are held in proper relation by the bolts above referred to, as well as by the ends of a semi-circular iron 12 which projects in front of the front board and is secured to the top edges of the boards by bolts 13. The distance apart of the boards may be varied by adjusting the nuts 10 and by setting the bolts 13 in different holes 14 in the semicircular iron 12 referred to.

The tongue 15 is pivotally connected at its rear end as at 16 to a loop at the front end of the middle bolt 9, and it is supported on the iron 12 by a hanger 17 which is bolted to the said iron and which can be adjusted to different positions along the same, a series of bolt holes being rovided. By this means the relative angl el of the tongue and the boards may be varied, with consequent variation in the action or draft of the scraper. The draft chain 19 is connected top edge of the front board 6 and are connected to the ends of the roller by links 23, one lever being located above each end of the roller. Each lever is engageable with a notched rack 24, projecting upwardly from the rear board. By manipulating the levers the roller can be raised or lowered. The rear board also has a handle 25 for controlling or handling the scraper.

The roller travels along the surface .of the ground behind the board and consequently limits the extent or depth of the cut of the boards and also serves to roll or smooth the surface of the ground or road being worked. The roller may be weighted as desired. By manipulating the levers 22 the scraper can be raised or lowered to vary the cut, and when sufficiently raised the scraper boards will be lifted from the ground and thereby rendered inoperative, and the device can then be easily transported. The position of the roller makes the device quite easy to work and control, and it will be found very useful for cutting down ridges and high points and unevensurfaces in road beds and in filling holes and low places, so as to leave a smooth and solid surface. The tongue adjustment permits the grader to be run straight ahead or at any angle from the right to the left so as to carry the dirt in either direction.

I claim:

1. In a grader or scraper comprising front and rear boards connected together, a roller extending across between the boards, and means connected to o posite ends of the roller to raise or lower tTie boards.

2. A grader or scraper comprising front and rear boards connected together, a roller extending across between the boards, links connected to the front board and to the ends of the roller, levers fulcrumed on the front board and extending rearwardly over each end of the roller and connected thereto, and racks projecting upwardly from the rear board and with which the levers are engageable to hold the roller in adjusted position.

3. A grader or scraper comprising front adjustable along the iron and supporting the and rear boards, bolts connecting the same, tongue. 10 a curved iron the ends of which extend across In testimony whereof I aflix my signature, the top edge of the boards and are secured in presence of two witnesses.

5 thereto, and the middle bowed portion of HAVILAND TOMPKINS.

which projects forwardly beyond the front Witnesses:

board, a tongue pivotally connected to the R. F. CLUTTER,

front end of one of said bolts, and a hanger GEO. A. STALEY. 

